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Emissions

CO₂ emissions check

Enter a registration to see the recorded CO₂ figure, where we hold one.

5,000,000+ vehicle checks generated in the last 12 months

  • CO₂ data
  • Tax band
  • Clean-air zones
  • Free check
  • Emissions where held
  • Tax band
  • No account needed
  • CO₂Emissions figure where we hold it
  • Tax bandLinked to the emissions data
  • Clean-airZone eligibility context
  • FreeEnter a registration

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What does our CO₂ emissions check include?

The recorded CO₂ figure, in grams per kilometre, where we hold it.

Recorded CO₂

The CO₂ figure in grams per kilometre, where we hold one for that registration. If it is missing, we leave it blank.

Model tables

Brand pages list recorded CO₂, CO₂ band, Euro class, fuel type and engine size by variant and year, where those fields are held.

Not the tax status

Taxed, untaxed or SORN is the registration tax line. It is not this CO₂ figure, and this page does not show the annual rate.

Tax bands elsewhere

Vehicle tax bands and rates are on the model tax pages, or on the GOV.UK vehicle tax tools linked in the sidebar.

Same free report

MOT status and history, make, model, year, colour, fuel, and a VehicleScore out of 999.

Not a tailpipe test

The figure is the recorded specification. It is not a measurement taken from the car in front of you.

Browse emissions by car brand

Select a manufacturer to see recorded CO₂ figures for their models.

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The recorded CO₂ figure

Enter the registration. Where we hold a CO₂ value, the free report shows it in grams per kilometre. Model pages list the same kind of figure by variant, with CO₂ band, Euro class, fuel type and engine size when those fields are on the record.

That is not the registration tax status. Taxed, untaxed or SORN, and a due date when we hold one, are on the car tax check. Annual rates and bands are on the model tax pages, or on the GOV.UK vehicle tax tools.

On the model table

  • CO₂ in g/km, where held
  • CO₂ band, Euro class, fuel type and engine size, where held
  • A blank cell when that field is missing

Related checks

ULEZ compliance, when we hold an emissions record, is on the ULEZ check. Recorded MPG is on the fuel economy check. Mileage history for one registration is on the mileage check.

Frequently Asked Questions

The recorded CO₂ figure in g/km, where we hold one. Model pages also show CO₂ band, Euro class, fuel type and engine size when those fields are on the record.

The free registration report shows the figure alongside MOT status and history, tax status, make, model, year, colour, fuel, and a VehicleScore out of 999.

No. Taxed, untaxed or SORN is the registration tax status, on the car tax check. This page shows the recorded CO₂ figure.

Bands and annual rates are on the model tax pages, or on the GOV.UK vehicle tax tools.

We leave it blank. We do not estimate a figure.

No. ULEZ compliance, when we hold an emissions record, is on the ULEZ check. This page is the CO₂ figure.

No. It is the CO₂ value on the record we hold, not a reading from the exhaust.